chapter 1 test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| variable | characteristic or attribute that can assume different values
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| data | values of the variables
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| random variable | variables that have their value determined by chance
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| data set | collection of data values
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| data value -- datum | each value of the data set
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| probability | the chance of an event occuring
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| population | consists of all subjects being studied
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| sample | group of subjects selected from a population
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| hypothesis testing | decision-making process for evaluating claims about a population based on info from samples
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| independent variable (exploratory) | a variable in correlation and regression analysis that can be controlled or manipulated
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| dependent event (outcome, resultant) | events for which the outcome or occurrence of the first event affects the outcome or occurrence of the second event in such a way that the probability is changed
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| true vs. quasi experiments | one case where the subjects are assigned to groups randomly while the other case is where subjects are in intact groups
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| confounding variable | a variable that influences the outcome variable but can't be separated from the other variables that influence the outcome variable.
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| Hawthorne effect | an effect on an outcome variable caused by the that subjects of the study know that they are participating in the study
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| control group | a group in an experimental study that isn't given any special treatment
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| treatment group | a group in an experimental study that has received some kind of treatment
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| margin of error | a usually small amount that is allowed for in case of miscalculation or change of circumstances
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| margin of error interval | the interval calculated after finding the amount of miscalculation or change of circumstances
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| biased question | a question constructed badly and is asked in such a way that the respondent can understand it wrongly and if can favor a certain answer
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| unbiased question | questions that are read in a way that they don't influence the respondents or provide info. which may color the opinions of the respondents
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| sequential sampling | used in quality control; successive units taken from the production line and sampled to ensure the product meets the standards
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| double sampling | a sampling method in which a very large population is given a questionnaire to determine those who meet the qualifications for a study; the questionnaire is reviewed, a second smaller population is defined, and a sample is selected from this group
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| multistage sampling | a sampling technique that uses a combination of sampling methods
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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